Environmental Engineering

A. grade of sewer
B. length of sewer
C. hydraulic mean depth of sewer
D. roughness of sewer

A. rectangular section
B. circular section
C. standard form of egg shaped sewer
D. modified egg shaped section

A. 15 cm and 100 cm
B. 15 cm and 300 cm
C. 30 cm and 450 cm
D. 60 cm and 300cm

A. equal to dry weather flow (DWF)
B. 2xDWF
C. 3 x DWF
D. 6xDWF

A. less than 1.0 m/sec
B. 1.0 m/sec to 1.2 m/sec
C. 1.5 m/sec to 2.0 m/sec
D. 3.0 m/sec to 3.5 m/sec

A. the time taken by rainfall water to run from most distant point of water shed to the inlet of sewer
B. the time required for flow of water in sewer to the point under consideration
C. sum of (A) and (B)
D. difference of (A) and (B)

A. is cheaper in initial cost than dry conservancy system
B. requires treatment before disposal
C. creates hygenic problem
D. all of the above

A. circular sewer
B. egg shaped sewer
C. rectangular sewer
D. none of the above

A. 100 litres
B. 135 litres
C. 165 litres
D. 200 litres

A. house sewer
B. lateral sewer
C. main sewer
D. submain sewer